Messages in this thread | | | Date | Sat, 14 Jul 2001 04:11:21 -0300 (BRT) | From | Marcelo Tosatti <> | Subject | Re: [PATCH] Separate global/perzone inactive/free shortage |
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There is a silly typo on the patch.
On Sat, 14 Jul 2001, Marcelo Tosatti wrote:
> > Hi, > > As well known, the VM does not make a distiction between global and > per-zone shortages when trying to free memory. That means if only a given > memory zone is under shortage, the kernel will scan pages from all zones. > > The following patch (against 2.4.6-ac2), changes the kernel behaviour to > avoid freeing pages from zones which do not have an inactive and/or > free shortage. > > Now I'm able to run memory hogs allocating 4GB of memory (on 4GB machine) > without getting real long hangs on my ssh session. (which used to happen > on stock -ac2 due to exhaustion of DMA pages for networking). > > Comments ? > > Dirk, Can you please try the patch and tell us if it fixes your problem ? > >
mm/vmscan.c diff
> @@ -574,8 +593,13 @@ > * If we're freeing buffer cache pages, stop when > * we've got enough free memory. > */ > - if (freed_page && !free_shortage()) > - break; > + if (freed_page) { > + if (zone) { > + if (!zone_free_shortage(zone)) > + break; > + } else if (free_shortage()) ^^^^^^^^ ^^^^^^ Should be } else if (!free_shortage())
> + break; > + } > continue;
Well, updated patch at http://bazar.conectiva.com.br/~marcelo/patches/v2.4/2.4.6ac2/zoned.patch
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